/Engine/Source/Editor/UnrealEd/Public/LevelEditorDragDropHandler.h
virtual bool PostDropObjectsAtCoordinates ( int32 MouseX, int32 MouseY, [UWorld](API\Runtime\Engine\Engine\UWorld) * World, [FViewport](API\Runtime\Engine\FViewport) * Viewport, const [TArray](API\Runtime\Core\Containers\TArray)< [UObject](API\Runtime\CoreUObject\UObject\UObject) * > & DroppedObjects )